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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Manager	Patricio Simpson	Argentina	1 2 3 4 5
2	Sales Representative	Georg Pipps	USA	1 2 3 4 5
3	Sales Representative	Antonio Moreno	England	1 2 3 4 5
4	Owner	Antonio Moreno	Spain	1 2 3 4 5
5	Sales Associate	Hanna Moos	England	1 2 3 4 5
6	Sales Consultant	Matti Karttunen	Spain	1 2 3 4 5
7	Marketing Manager	Paul Henriot	Germany	1 2 3 4 5
8	Accountant	Jaime Yorres	Austria	1 2 3 4 5
9	Sales Representative	Jaime Yorres	Italy	1 2 3 4 5
10	Sales Associate	Howard Snyder	Spain	1 2 3 4 5
11	Sales Agent	Antonio Moreno	Germany	1 2 3 4 5
12	Sales Consultant	Jaime Yorres	England	1 2 3 4 5
13	Sales Consultant	Howard Snyder	Italy	1 2 3 4 5
14	Sales Associate	Jaime Yorres	Germany	1 2 3 4 5
15	Accounting Manager	Jaime Yorres	Argentina	1 2 3 4 5
16	Owner	Matti Karttunen	Italy	1 2 3 4 5
17	Accounting Manager	Patricio Simpson	Brazil	1 2 3 4 5
18	Marketing Manager	Pascale Cartrain	England	1 2 3 4 5
19	Accounting Manager	Antonio Moreno	Italy	1 2 3 4 5
20	Marketing Assistant	Pascale Cartrain	Germany	1 2 3 4 5
21	Owner	Pascale Cartrain	Germany	1 2 3 4 5
22	Sales Representative	Paul Henriot	Spain	1 2 3 4 5
23	Owner	Pascale Cartrain	Argentina	1 2 3 4 5
24	Sales Agent	Jaime Yorres	Italy	1 2 3 4 5
25	Sales Agent	Howard Snyder	Brazil	1 2 3 4 5
26	Sales Consultant	Georg Pipps	Germany	1 2 3 4 5
27	Sales Representative	Paul Henriot	Brazil	1 2 3 4 5
28	Marketing Manager	Pascale Cartrain	Italy	1 2 3 4 5
29	Accounting Manager	Matti Karttunen	USA	1 2 3 4 5
30	Marketing Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
31	Sales Consultant	Georg Pipps	France	1 2 3 4 5
32	Sales Agent	Howard Snyder	England	1 2 3 4 5
33	Owner	Paul Henriot	Germany	1 2 3 4 5
34	Sales Consultant	Antonio Moreno	Argentina	1 2 3 4 5
35	Sales Associate	Antonio Moreno	France	1 2 3 4 5
36	Accountant	Georg Pipps	Bulgaria	1 2 3 4 5
37	Sales Consultant	Elizabeth Lincoln	England	1 2 3 4 5
38	Sales Consultant	Pascale Cartrain	England	1 2 3 4 5
39	Marketing Manager	Howard Snyder	Bulgaria	1 2 3 4 5
40	Accountant	Patricio Simpson	Bulgaria	1 2 3 4 5
41	Marketing Manager	Hanna Moos	France	1 2 3 4 5
42	Sales Associate	Jaime Yorres	Spain	1 2 3 4 5
43	Marketing Assistant	Georg Pipps	Italy	1 2 3 4 5
44	Accounting Manager	Patricio Simpson	England	1 2 3 4 5
45	Accounting Manager	Paul Henriot	Spain	1 2 3 4 5
46	Sales Agent	Pascale Cartrain	Spain	1 2 3 4 5
47	Sales Manager	Hanna Moos	Bulgaria	1 2 3 4 5
48	Sales Consultant	Matti Karttunen	USA	1 2 3 4 5
49	Sales Representative	Howard Snyder	Austria	1 2 3 4 5
50	Sales Associate	Paul Henriot	Italy	1 2 3 4 5
51	Accounting Manager	Georg Pipps	USA	1 2 3 4 5
52	Sales Agent	Patricio Simpson	Argentina	1 2 3 4 5
53	Accounting Manager	Howard Snyder	Italy	1 2 3 4 5
54	Accountant	Hanna Moos	Argentina	1 2 3 4 5
55	Marketing Assistant	Elizabeth Lincoln	Spain	1 2 3 4 5
56	Marketing Assistant	Georg Pipps	England	1 2 3 4 5
57	Marketing Manager	Georg Pipps	Bulgaria	1 2 3 4 5
58	Accountant	Patricio Simpson	France	1 2 3 4 5
59	Marketing Manager	Pascale Cartrain	Austria	1 2 3 4 5
60	Accounting Manager	Pascale Cartrain	Germany	1 2 3 4 5
61	Marketing Assistant	Paul Henriot	USA	1 2 3 4 5
62	Sales Representative	Elizabeth Lincoln	USA	1 2 3 4 5
63	Accountant	Paul Henriot	Spain	1 2 3 4 5
64	Marketing Assistant	Hanna Moos	Austria	1 2 3 4 5
65	Accountant	Elizabeth Lincoln	Spain	1 2 3 4 5
66	Sales Manager	Antonio Moreno	Germany	1 2 3 4 5
67	Accounting Manager	Paul Henriot	Austria	1 2 3 4 5
68	Owner	Pascale Cartrain	Brazil	1 2 3 4 5
69	Marketing Manager	Jaime Yorres	Argentina	1 2 3 4 5
70	Marketing Assistant	Pascale Cartrain	Spain	1 2 3 4 5
71	Sales Representative	Georg Pipps	USA	1 2 3 4 5
72	Marketing Manager	Georg Pipps	Germany	1 2 3 4 5
73	Sales Manager	Jaime Yorres	Austria	1 2 3 4 5
74	Sales Associate	Antonio Moreno	Austria	1 2 3 4 5
75	Sales Representative	Paul Henriot	Austria	1 2 3 4 5
76	Sales Representative	Georg Pipps	Spain	1 2 3 4 5
77	Accounting Manager	Elizabeth Lincoln	Brazil	1 2 3 4 5
78	Marketing Manager	Antonio Moreno	England	1 2 3 4 5
79	Sales Manager	Hanna Moos	Austria	1 2 3 4 5
80	Sales Associate	Elizabeth Lincoln	Austria	1 2 3 4 5
81	Accountant	Jaime Yorres	Argentina	1 2 3 4 5
82	Sales Consultant	Antonio Moreno	England	1 2 3 4 5
83	Owner	Elizabeth Lincoln	Brazil	1 2 3 4 5
84	Sales Manager	Matti Karttunen	England	1 2 3 4 5
85	Marketing Assistant	Patricio Simpson	Brazil	1 2 3 4 5
86	Marketing Assistant	Paul Henriot	USA	1 2 3 4 5
87	Sales Representative	Howard Snyder	Brazil	1 2 3 4 5
88	Marketing Assistant	Matti Karttunen	Spain	1 2 3 4 5
89	Owner	Paul Henriot	USA	1 2 3 4 5
90	Marketing Assistant	Elizabeth Lincoln	Brazil	1 2 3 4 5
91	Sales Representative	Hanna Moos	Austria	1 2 3 4 5
92	Sales Consultant	Paul Henriot	Germany	1 2 3 4 5
93	Sales Manager	Patricio Simpson	Austria	1 2 3 4 5
94	Sales Consultant	Jaime Yorres	Italy	1 2 3 4 5
95	Sales Consultant	Matti Karttunen	France	1 2 3 4 5
96	Accountant	Elizabeth Lincoln	Italy	1 2 3 4 5
97	Sales Associate	Antonio Moreno	England	1 2 3 4 5
98	Marketing Assistant	Howard Snyder	Spain	1 2 3 4 5
99	Sales Agent	Antonio Moreno	Italy	1 2 3 4 5
100	Marketing Manager	Jaime Yorres	Bulgaria	1 2 3 4 5


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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